40481280

素因数分解:

$2^9\times 3^2\times 5^1\times 7^1\times {\mathrm{251}}^1$

素因数の和:287

約数の個数: 240

約数和(自身を含む): 160864704

約数和(自身を除く): 120383424

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 251, 252, 256, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 502, 504, 512, 560, 576, 630, 640, 672, 720, 753, 768, 840, 896, 960, 1004, 1008, 1120, 1152, 1255, 1260, 1280, 1344, 1440, 1506, 1536, 1680, 1757, 1792, 1920, 2008, 2016, 2240, 2259, 2304, 2510, 2520, 2560, 2688, 2880, 3012, 3360, 3514, 3584, 3765, 3840, 4016, 4032, 4480, 4518, 4608, 5020, 5040, 5271, 5376, 5760, 6024, 6720, 7028, 7530, 7680, 8032, 8064, 8785, 8960, 9036, 10040, 10080, 10542, 10752, 11295, 11520, 12048, 13440, 14056, 15060, 15813, 16064, 16128, 17570, 17920, 18072, 20080, 20160, 21084, 22590, 23040, 24096, 26355, 26880, 28112, 30120, 31626, 32128, 32256, 35140, 36144, 40160, 40320, 42168, 45180, 48192, 52710, 53760, 56224, 60240, 63252, 64256, 70280, 72288, 79065, 80320, 80640, 84336, 90360, 96384, 105420, 112448, 120480, 126504, 128512, 140560, 144576, 158130, 160640, 161280, 168672, 180720, 192768, 210840, 224896, 240960, 253008, 281120, 289152, 316260, 321280, 337344, 361440, 385536, 421680, 449792, 481920, 506016, 562240, 578304, 632520, 642560, 674688, 722880, 843360, 899584, 963840, 1012032, 1124480, 1156608, 1265040, 1349376, 1445760, 1686720, 1927680, 2024064, 2248960, 2530080, 2698752, 2891520, 3373440, 4048128, 4497920, 5060160, 5783040, 6746880, 8096256, 10120320, 13493760, 20240640, 40481280]

約数ペア:

[(1, 40481280), (2, 20240640), (3, 13493760), (4, 10120320), (5, 8096256), (6, 6746880), (7, 5783040), (8, 5060160), (9, 4497920), (10, 4048128), (12, 3373440), (14, 2891520), (15, 2698752), (16, 2530080), (18, 2248960), (20, 2024064), (21, 1927680), (24, 1686720), (28, 1445760), (30, 1349376), (32, 1265040), (35, 1156608), (36, 1124480), (40, 1012032), (42, 963840), (45, 899584), (48, 843360), (56, 722880), (60, 674688), (63, 642560), (64, 632520), (70, 578304), (72, 562240), (80, 506016), (84, 481920), (90, 449792), (96, 421680), (105, 385536), (112, 361440), (120, 337344), (126, 321280), (128, 316260), (140, 289152), (144, 281120), (160, 253008), (168, 240960), (180, 224896), (192, 210840), (210, 192768), (224, 180720), (240, 168672), (251, 161280), (252, 160640), (256, 158130), (280, 144576), (288, 140560), (315, 128512), (320, 126504), (336, 120480), (360, 112448), (384, 105420), (420, 96384), (448, 90360), (480, 84336), (502, 80640), (504, 80320), (512, 79065), (560, 72288), (576, 70280), (630, 64256), (640, 63252), (672, 60240), (720, 56224), (753, 53760), (768, 52710), (840, 48192), (896, 45180), (960, 42168), (1004, 40320), (1008, 40160), (1120, 36144), (1152, 35140), (1255, 32256), (1260, 32128), (1280, 31626), (1344, 30120), (1440, 28112), (1506, 26880), (1536, 26355), (1680, 24096), (1757, 23040), (1792, 22590), (1920, 21084), (2008, 20160), (2016, 20080), (2240, 18072), (2259, 17920), (2304, 17570), (2510, 16128), (2520, 16064), (2560, 15813), (2688, 15060), (2880, 14056), (3012, 13440), (3360, 12048), (3514, 11520), (3584, 11295), (3765, 10752), (3840, 10542), (4016, 10080), (4032, 10040), (4480, 9036), (4518, 8960), (4608, 8785), (5020, 8064), (5040, 8032), (5271, 7680), (5376, 7530), (5760, 7028), (6024, 6720)]